Over The Years There Have Been Many 'Near Misses' By Asteroids,

that might have hit the Earth,

and of course some did indeed hit the earth, but that's another story, there is one 'near miss' heading for us soon, giving the third of a mile wide rock it's proper name 2004 BL86, will come within 745,000 miles of our planet, or three times what the distance is between us and the moon, though that distance sounds incredibly far, it's considered a narrow encounter in terms of space, our miss with 2004 BL86 will be the closest an asteroid comes to Earth until August 7, 2027, when 1999 AN10 is predicted to fly by, unless someone knows of another!